# A109740 (b-file synthesized from sequence entry) 1 1 2 2 3 3 4 5 5 9 6 17 7 33 8 65 9 87 10 129 11 153 12 229 13 257 14 321 15 481 16 641 17 769 18 785 19 1025 20 1281 21 1425 22 1793 23 1889 24 2049 25 2561 26 3329 27 3857 28 3937 29 4097 30 8193 31 10241 32 10849 33 14337 34 14849 35 15681 36 18273 37 20321 38 22369 39 22529 40 27905 41 31489 42 31745 43 38913